Tags » Moebius

Porthmeor

I used colour and string in many of the carvings of this time . The colour in the concavities plunged me into the depth of water, caves, or shadows deeper than the carved concavities themselves. 751 more words

Knitting

The Riemann zeta function

Recall from my previous post that given a function , we define , the Dirichlet generating function of , by

We also proved that : the product of Dirichlet generating functions is the Dirichlet generating function of the Dirichlet convolution. 401 more words

Number Theory

Dirichlet generating functions

Suppose is a function defined for positive integers . Then we can define an infinite series as follows:

(This might look a bit strange, but bear with me!) For example, suppose for all . 330 more words

Number Theory

Maintaining a positive balance on the TBR

I try to read more books than I buy each month – or buy less books than I read, I guess it depends on how you look at it. 396 more words

Books

A Bubble in the Wall

The USSR 60-kopeck with art by Moebius

Artistamps